483 results about "Material hardness" patented technology

Low dielectric materials and films comprising same have been identified for improved performance when used as interlevel dielectrics in integrated circuits as well as methods for making same. In one aspect of the present invention, an organosilicate glass film is exposed to an ultraviolet light source wherein the film after exposure has an at least 10% or greater improvement in its mechanical properties (i.e., material hardness and elastic modulus) compared to the as-deposited film.

A golf ball comprising a core; and a cover comprising an inner cover layer; an outer cover layer having a material hardness of 60 Shore D or less; and an intermediate cover layer disposed between the inner and outer cover layers; wherein at least two of the inner, intermediate, and outer cover layers comprise a non-ionomeric material.

The invention provides a high-abrasion Ti(C, N) based metal ceramic tool and a preparation thereof. The Ti(C, N) based metal ceramic tool uses Ni and Co as a binder phase, is added with at least one carbonitride of Ti(Cx, N1-x) or (TiC)x plus (TiN)1-x as a basic batch, and consists of at least one composition of WC, Mo2C, Co, Ni, ZrC, Cr3C2, VC, TaC and NbC, and the balance being Ti(Cx, N1-x) or (TiC)x plus (TiN)1-x, wherein, an X value for adding the carbonitride of the Ti(C, N) based metal ceramic tool is as follows: X is less than or equal to 0.5 and more than or equal to 0.4, or the X is more than 0.5 and less than or equal to 0.7. The Ti(C, N) based metal ceramic tool is prepared according to the content of nitrogen by nitrogen pressure sintering or vacuum sintering combined with hot isostatic pressing treatment, thereby preventing nitrogen from escaping during the process of sintering high-nitrogen alloy, so that the high-nitrogen-carbon ratio in matrix and material hardness can be reliably guaranteed, and anti-oxidative abrasion property and anti-diffusive abrasion property of the material can be obviously increased through adding slight ZrC, Cr3C2, VC and other carbides into the basic batch; meanwhile, compactability and buckling strength of a low-nitrogen alloy structure can be obviously improved through optimally distributing each composition and content. The Ti(C, N) based metal ceramic tool is widely suitable for high-speed cutting tools of medium-low carbon steel and low alloy steel.

The invention discloses a refractory high-entropy alloy/titanium carbide composite. A refractory high-entropy alloy serves as a matrix phase, and titanium carbide serves as a wild phase; and elements in the refractory high-entropy alloy are selected from at least four kinds of elements of W, Mo, Ta, Nb, V, Ti, Zr, Hf and Cr. A preparation method of the refractory high-entropy alloy/titanium carbide composite comprises the steps that at least four kinds of carbonization metal powder in tungsten carbide, molybdenum carbide, tantalum carbide, niobium carbide, vanadium carbide, the titanium carbide, hafnium carbide, zirconium carbide and chromium carbide are selected and mixed according to the equal molar ratio or the ratio close to the equal molar ratio to form high-entropy matrix powder; and after the high-entropy matrix powder and titanium powder are mixed, alloy mechanization is carried out, then spark plasma sintering or hot-press sintering is carried out, and the refractory high-entropy alloy/titanium carbide composite is obtained. The density and cost of the composite are reduced while the hardness of the composite is improved, excellent high-temperature performance is achieved, and the requirement for manufacturing a high-temperature structural component is met.

A vehicle door handle assembly for opening a door of a vehicle includes a base which is mountable at the door of the vehicle and a handle portion which is operable to open the door via movement of the handle portion relative to the base. The handle portion includes a first portion having a first material hardness and a second portion having a second material hardness. The first material hardness is greater than the second material hardness, such that the second portion provides a softer feel to a user of the door handle assembly when opening the door of the vehicle. The door handle assembly may further include an illumination source for illuminating the handle portion and/or a heating element for heating the handle portion.

The invention provides a multi-piece solid golf ball having a solid core, at least one intermediate layer and a cover. The core has a hardness which gradually increases from a core center to a core surface, with the hardness difference in JIS-C hardness units between the core center and the core surface being at least 15 and, letting (I) be the average value for the cross-sectional hardness at a position 15 mm from the core center and the cross-sectional hardness at the core center and letting (II) be the cross-sectional hardness at a position 7.5 mm from the core center, the hardness difference (I)-(II) in JIS-C hardness units being not more than ±2. The intermediate layer has a material hardness and the core has a surface hardness which together satisfy the condition (JIS-C hardness of intermediate layer material)−(JIS-C hardness of core surface)>0. A sphere composed of the core encased by the intermediate layer has an initial velocity and the core has an initial velocity which together satisfy the condition (initial velocity of sphere composed of core encased by intermediate layer)−(initial velocity of core)≧0. The sphere composed of the core encased by the intermediate layer has a deflection and the core has a deflection which together satisfy the condition 0.80≦(deflection of sphere composed of core encased by intermediate layer)/(deflection of core). The cover is formed primarily of polyurethane, and the cover material has a Shore D hardness and the intermediate layer material has a Shore D hardness which together satisfy the condition (Shore D hardness of cover material)−(Shore D hardness of intermediate layer material)≦0. The golf ball of the invention has an excellent flight performance and feel, a good durability to repeated impact, and an excellent scuff resistance.

A multi-piece solid golf ball has a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The envelope layer is formed of an inner envelope layer, an intermediate envelope layer and an outer envelope layer. The inner, intermediate and outer envelope layers, the intermediate layer and the cover are each formed primarily of a resin material which may be of the same or different types, and the core is formed primarily of a rubber material. The cover has a material hardness which is the same as or lower than the core center hardness. One of the inner layers has a material hardness which is higher than either or both of the cover material hardness and the average core hardness (defined as the arithmetic mean of the core surface hardness and the core center hardness). The golf ball, even when used by those golfers among professionals and skilled amateurs who, on striking a ball with a driver, tend to generate shots having a rather low spin rate and a low launch angle, has an excellent flight performance and also excellent controllability in the short game that are acceptable to such users. In addition, it has a good feel on impact and an excellent scuff resistance.

A noise-reducing substrate for use in a flooring system, the flooring system having a subfloor and a decorative upper layer. The substrate comprises a series of edge butted panels, each of which has a bottom surface, a top surface and side surfaces. Each panel's top surface and oppositely facing bottom surface are parallel to each other and are spaced apart by the thickness of the substrate. A profile in the bottom surface of the substrate changes the substrate's effective stiffness and improves the noise isolation of the substrate compared to the stiffness and noise isolation of the panel without the profile. Additionally, the profile reduces the weight of the panel, thereby reducing manufacturing and installation costs. When the substrate is positioned between the subfloor and the decorative top layer, the material hardness and the flat profile of the upper surface provide a platform with the strength and texture required to allow for installation of the decorative floor layer without the need for an additional rigid backing material. Such a system greatly improves the impact noise reduction on a variety of floor/ceiling systems while keeping the installation cost low and the adding very little to the total system thickness.

A surgical instrument and method are provided for guiding a cutting tool to resect an anatomical structure. The surgical instrument includes a guide body formed of a guide body material having a guide body material hardness, and a first bearing and a second bearing formed of a bearing material having a bearing material hardness. The bearing material hardness is greater than the guide body material hardness. The first bearing and the second bearing are secured to the guide body with at least a portion of the first bearing and at least a portion of the second bearing exposed from the guide body. Also, the second bearing is spaced a distance from the first bearing. By arranging the first bearing and the second bearing in this manner, the first bearing and the second bearing provide a discontinuous bearing surface for a cutting tool to contact when moving within the guide body. Additionally, the first bearing and the second bearing are each sized and arranged so that with the cutting tool positioned for guiding by the surgical instrument, the first bearing and the second bearing prevent contact between the cutting tool and the guide body.

The present invention provides a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is composed overall of an inner layer and an outer layer which are each formed primarily of a rubber material, with the outer core layer being harder than the inner core layer. The envelope layer, intermediate layer and cover have respective thicknesses which satisfy the condition: cover thickness<intermediate layer thickness<envelope layer thickness, and have respective material hardnesses (Shore D hardness) which satisfy the condition: envelope layer material hardness<intermediate layer material hardness>cover material hardness. The golf ball has a lower spin rate on full shots with a driver, further increasing the distance traveled by the ball. Moreover, it has a good controllability, maintaining in particular a straight trajectory on full shots, and also has an excellent scuff resistance.

The invention discloses a saw frame feeding system with the constant saw cutting force and the variable feeding speed and a saw frame feeding method. The system consists of a saw frame, a hydraulic system and a control system, wherein the saw frame is arranged on a sawing machine through double upright posts and is driven by an oil cylinder to vertically move along the upright posts. The control system is in a multilayer multi-machine cooperative hardware system structure, real-time/non-real-time tasks are allocated to each processing unit according to the types, and the reliability of the system is improved through a hard logic gate circuit. According to workpiece cross section types and parameters selected by operators, the system implements the variable feeding speed feed forward control on the basis of the workpiece saw cutting width variable by combining the measured saw frame displacement and the workpiece material hardness. The constant saw cutting force closed loop feedback feeding control is carried out according to oil cylinder oil pressure value collected by a pressure sensor, the quality of saw cutting workpieces and the work efficiency of the sawing machine are improved, and the saw blade consumption is reduced. Through the adoption of control strategies of customized cutting-in and cutting-out feeding and fast ascending reset of the saw frame, the solution of thesaw frame feeding control system is more prefect.

A golf ball comprising a core and a cover disposed about the core, wherein the core comprises a center and at least one outer core layer adjacent the center, and the cover comprises at least one inner cover layer and an outer cover layer, wherein the center has an outer diameter from about 0.375 in to about 1.4 in and deflection of greater than about 4.5 mm under a load of 100 Kg, the outer core layer has an outer diameter of from about 1.4 in to about 1.62 in, the inner cover layer has an outer diameter of greater than about 1.58 in and a material hardness of less than about 72 Shore D, and the outer cover layer has a hardness of greater than about 50 Shore D.

The invention relates to a high-thermal-conductivity reaction-sintered silicon carbide ceramic material and a preparation method thereof. The high-thermal-conductivity reaction-sintered silicon carbide ceramic material comprises 50-90wt.% of silicon carbide, 0.5-12.5wt.% of graphene, 1-3wt.% of surfactants, 0.5-2.5wt.% of dispersing agents and 0.3-1.5wt.% of binders. The high-thermal-conductivity reaction-sintered silicon carbide ceramic material is prepared by means of raw material mixing, shaping and reactive sintering for 8-12 hours at the temperature of 1650-1800 DEG C under a vacuum condition. The prepared SiC (silicon carbide) ceramic material has the advantages of high hardness, low thermal expansion coefficient, high thermal conductivity, more uniformity in material performance and higher service reliability.

The present invention provides a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is formed primarily of a rubber material, the envelope layer and the intermediate layer are each formed primarily of the same or different resin materials, and the cover is formed primarily of a thermoplastic resin or a thermoplastic elastomer. The envelope layer, intermediate layer and cover have thicknesses which satisfy the condition: cover thickness<intermediate layer thickness<envelope layer thickness, and the condition: (cover thickness+intermediate layer thickness)<envelope layer thickness. The core surface, envelope layer, intermediate layer and cover have Shore D hardnesses which satisfy the condition: core surface hardness≦envelope layer material hardness<intermediate layer material hardness>cover material hardness. The golf ball has an outstanding flight performance and controllability which are acceptable to professionals and other skilled players, in addition to which it has an excellent durability to cracking under repeated impact and an excellent scuff resistance.

This patent application discloses a stab-proof sheet, especially relates to a high-performance non-metallic stab-proof sheet and its manufacturing process. The high-performance non-metal stab-proof sheet is made by painting a certain proportion of mixed resin on both sides of the aramid woven fabric, and then performing molding and drying and curing. By adding a resin matrix to the aramid woven fabric to increase the hardness of the material and enhance its mechanical properties such as impact resistance and shear strength. The mixed resin is formed by stirring epoxy resin and acetone into a mixture at a mass ratio of 3.7-4.3:1, and then mixing the mixture with polyamide resin at a mass ratio of 2:1-1.2. This patent overcomes the defects of low anti-stab performance, poor stability and high production cost in the existing non-metallic anti-stab material technology, and provides a anti-stab material with low cost, strong anti-stab performance and high stability , the cost is lower than that of imported anti-stab film.

The invention discloses a tackifying and reinforcing modified polysiloxane and a preparation method and application thereof. The modified polysiloxane is prepared from an intermediate polysiloxane product and an organic compound containing a tackifying group and a vinyl group through hydrosilylation reaction in the presence of a hydrosilylation reaction catalyst, wherein the intermediate polysiloxane product is prepared by terminating methyl vinyl polysiloxane by using a terminator and the tackifying group refers to an organic group capable of increasing adhesion to a substrate. The adhesive strength of a packaging adhesive prepared from the tackifying and reinforcing modified polysiloxane is improved greatly; in addition, other properties such as cured material hardness, light transmittance and tensile strength, are excellent.